“诗穷者而后工”是由“发愤著书”衍生出来的子命题。本文根据古人的说法,总结出了“诗穷者而后工”四个方面的原因:一、穷而发愤,其文要约而写真;二、穷而发愤,其文能写人情之所难言:三、人穷则诗工;四、欢愉之辞难工,穷愁之言易好。 The Book of Poor Poets and Post-work is a sub-proposition derived from “angry book.” According to the ancients, this article summarizes the reasons for the following four aspects: the poet is poor and angry, and the text is an offer and a portrait; the poet is poor and angry, Third, poor people poetic; Fourth, the words of joy, hard work, poor words easy to say good.